Saw-setting machine.



No. 764,126- PATENTED JULY 5, 1904. J. HEGSTRUM.

SAW SETTING MACHINE.

APPLICATION FILED JUNE 9.190s.

no MODEL. ,ZSIiEETS-SHEET 1.

Jaw/1295 mm m.

PATBNTBD JULY 5, 1904.

No. 764,126. J. HEGSTRUM.

SAW SETTING MAGHINE.

APPLICATION FILED JUNE 9. 1903. N0 MODEL. I 2 SHEETS-SHEETB.

Fig.5.

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Witnesses wire STATES Patented July 5, 1904.

JOHN HEGSTRUM, OF ELCHO, WISCONSIN.

SAW-SETTING MACHINE.

SPECIFICATION forming art of Letters Patent No. 764,126, dated July 5, 1904.

Application filed June 9, 1903. Serial No. 160,737. (No model.)

To all whom it may concern.

Be it known that I, J OHN HEGSTRUM, a citizen of the United States, residing at Elcho, in the county of Langlade and State of Wisconsin, have invented certain new and useful Improvements in Saw-Setting Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in saw-setting machines.

The object of the invention is to provide a machine of this character by which the teeth of a saw may be quickly and easily set, means being provided to vary the set or pitch of the teeth.

Another object is to provide means for taking the set out of the saw-teeth.

A further object is to provide a device of this character which will be simple, strong, and durable, inexpensive, and well adapted to the purpose for which it is designed.

XVith these and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be more fully described, and particularly pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of the device arranged for setting the teeth of a saw. Fig. 2 is a top plan view, and Fig. 3 is a longitudinal sectional view of the same. Fig. 4 is a side elevation of the device arranged for taking the set out of a saw. Fig. 5 is a vertical cross-sectional view of the same. Fig. 6 is a detail perspective view of the teeth-straightening plate. Fig. 7 is a detail perspective view of the tool used in connection with the straightening-plate. Fig. 8 is a similar view of the setting-tool, and Fig. 9 is a similar view of the saw-guide and gage-block.

In the drawings, 1 denotes the base plate or board, upon which is bolted or otherwise secured the body or anvil 2 of the setting device, which consists, preferably, of a hollow rectangular oblong block or casting. On the forward end of the anvil is formed a hollow head 3, in which is pivoted one end of a lever 4, on the opposite end of which is formed a handle 5. 6 denotes a vertically disposed guide-standard formed on the opposite end of the anvil, and in said standard is formed a vertically-disposed slot in which the end of the lever is adapted to work. The upper face of the anvil adjacent to the head is beveled or inclined downwardly, as shown at 7 and in said inclined surface at the edges of the anvil are formed notches 8, which are adapted to receive lugs 9, formed on the lower edge of a guide and gage block 10, which is seated on the inclined surface 7 in juxtaposition to the head 3.

12 denotes a setting bit or tool having a head 13 and a screw-threaded shank 14:, which is adapted to be screwed into the lower edge of the lever 1 in such a position that the head 13 will have a working engagement with the edge of the guide-block 10, the lower face of the head 13 being beveled to the same degree as the inclined surface 7 of the anvil and in conjunction with which the face of the head 13 is adapted to act in setting the sawteeth. 7

15 denotes a holding-tool which is similar in construction to the setting-tool, consisting of a head and a threaded shank 16, and is adapted to be screwed into the lower edge of.

the lever l in rear of the tool or bit 12. The office of the tool 15 is to firmly hold the saw while a tooth is being set.

17 denotes a spring one end of which is connected to the top of the anvil, and the opposite end is adapted to bear in a groove formed in the lower edge of the lever, the tendency of the spring being to normally force the lever upwardly.

18 denotes a plate or strip arranged on each side of the anvil and corresponding in height to the same. ably about four feet long, and the inner ends of the same are connected to the base 1 by means of screws passed through the same and into the base, and on the outer ends of the plates are attached cross-pieces 19, forming supports for the said outer ends. The plates 18 are to support the ends of the saw while on the anvil.

In Figs. 4L and 5 the machine is arranged for taking the set out of the saw-teeth, and when arranged for this purpose the saw-guide These plates are each preferblock 10 is removed from the anvil, and in its place is arranged a flat plate 20, on the inner end of which is formed lugs 21, which are adapted to engage the notches 8 in the anvil, and on the outer end of the plate are formed lugs 22, which are adapted to engage the sides of the anvil, and by this means the plate is held in place. In this arrangement of the machine the setting-tool 12 is removed, and in its place is screwed a straightening-tool 23 similar in construction to the tool 12, having a threaded shank 24: and an elongated head 25, the working face of which is square.

In practice to set the teeth of a saw the same is arranged upon the anvil and plates 18, with the teeth of the same engaging the guide and gage block 10. The lever is now pressed to bring the setting-tool 12 down upon a tooth, forcing or bendingit down upon the inclined surface 7 of the anvil and setting the same. In taking the set out of the teeth the plate 20 is arranged upon the anvil as hereinbefore described, and the straightening-tool 23 substituted for the setting-tool. The saw is now placed on the plate 20 and the lever operated to bring the tool 23 into engagement with the teeth, which will press the teeth straight and into line.

The guide-block 10 is constructed from hard wood or soft metal, so as not to dull the teeth of the saw, and is made in several widths which when in place increase or diminish the width of the inclined setting-surface 7 thereby determining the pitch of the saw-teeth. The setting-tool may be also made in several different shapes and sizes for use with saws having teeth of different sizes and kinds.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. A saw setting and straightening machine comprising an anvil having a head, and having openings in its upper side adapted to removably receive a guide and gage block and a straightening-plate, interchangeable on the anvil, and a lever, pivotally connected to the head and having openings in its under side for receiving detachable and interchangeable setting and straightening tools.

2. A device of the class described, compris ing an anvil having a head rising therefrom, a guide and gage block detachable from the anvil, seated thereon and bearing against the inner side of the head, and a lever pivoted to the head and having a setting-tool to coact with the upper side of the anvil adjacent to the guide and gage block thereon.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN HEGSTRUM.

Witnesses:

CHAS. W. FIsH, WILLIE LITZEN. 

